/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.activiti.spring.impl.test;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.activiti.engine.ActivitiException;
import org.activiti.engine.ProcessEngine;
import org.activiti.engine.impl.test.AbstractActivitiTestCase;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.TestContextManager;
import org.springframework.test.context.TestExecutionListeners;
import org.springframework.test.context.support.DependencyInjectionTestExecutionListener;

/**
 * @author Joram Barrez
 * @author Josh Long
 */
@TestExecutionListeners(DependencyInjectionTestExecutionListener.class)
public abstract class SpringActivitiTestCase extends AbstractActivitiTestCase
    implements ApplicationContextAware {

	// we need a data structure to store all the resolved ProcessEngines and map them to something
	protected Map<Object, ProcessEngine> cachedProcessEngines = new ConcurrentHashMap<Object, ProcessEngine>();

	// protected static Map<String, ProcessEngine> cachedProcessEngines = new
	// HashMap<String, ProcessEngine>();

	protected TestContextManager testContextManager;

	@Autowired
	protected ApplicationContext applicationContext;

	public SpringActivitiTestCase() {
		this.testContextManager = new TestContextManager(getClass());
	}

	@Override
	public void runBare() throws Throwable {
		testContextManager.prepareTestInstance(this); // this will initialize all dependencies
		super.runBare();
	}

	@Override
	protected void initializeProcessEngine() {
		ContextConfiguration contextConfiguration = getClass().getAnnotation(ContextConfiguration.class);
		String[] value = contextConfiguration.value();
		boolean hasOneArg = value != null && value.length == 1;
		String key = hasOneArg ? value[0] : ProcessEngine.class.getName();
		ProcessEngine engine = this.cachedProcessEngines.containsKey(key) ? 
				this.cachedProcessEngines.get(key) : this.applicationContext.getBean(ProcessEngine.class);

		this.cachedProcessEngines.put(key, engine);
		this.processEngine = engine;
	}

	public void setApplicationContext(ApplicationContext applicationContext) {
		this.applicationContext = applicationContext;
	}
}
